This research aims to study the effects of manganese ore (MnO2) into the formula is formula, developed glass (60-x): B2O3 20ZnO: 20BaO: XMnO2 mol% of the experimental results showed that the density of glass that fill the MnO2 is not explicitly found in the density with increasing concentrations of MnO2. Up to absorb the light and the color is yellow. MnO2, which corresponds to the color values that are read from the measure in a CIE L * system * b *
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